Add track_times flag for HDFStore put method

[krysma]

When adding table to HDF using put method of HDFStore, it would be good to have option to set track_times flag used in pytables in method create_table. Thanks to this flag it is possible to stop tracking of times the file was changed. This is causing problems when versioning the HDF files and using checksums.

For this, it is necessary to propagate this flag from: https://github.com/pandas-dev/pandas/blob/master/pandas/io/pytables.py#L973 to this line: https://github.com/pandas-dev/pandas/blob/master/pandas/io/pytables.py#L4144

[krysma]

How to reproduce:
Run this python code to get sample h.5

import pandas as pd

df = pd.DataFrame([{"x": 1, "y": 1}, {"x": 2, "y": 2}, {"x": 3, "y":3}, {"x": 3, "y":4}])

hdf = pd.HDFStore("a.h5", mode="w")

hdf.put("table", df, format='table', data_columns=True, index=None)

hdf.close()

Once you have several files (2 is enough), check on their checksums:

sha256sum a.h5

Because of the track_times=True by default the sha is different.

Then change this line: https://github.com/pandas-dev/pandas/blob/master/pandas/io/pytables.py#L4144
to:
table._handle.create_table(table.group, track_times=False, **options)
Repeat the code to generate the hdf files again, run the sha checking and you will see, that the sha is same now.

[jreback]

https://www.pytables.org/usersguide/libref/file_class.html?highlight=create_table#tables.File.create_table this flag already defaults to True. not sure if we would ever want to set it to false anyhow.

[krysma]

I see, that @rbenes has implemented the feature in above mentioned PR, will it be merged soon, so we can close this issue?